Calculating machine



B. J. COLLINS. CALCULAITING MACHINE. APPLICATION. FILED my 13. 1919.

1,402,572. Patented Jan. 3, 1922.

3 SHEETS-SHEET I.

A TTORNE Y.

B. J. COLLINS.

CALCULATING MACHINE. APPLICATION. EILED'MAY 13, I919.

Patented J an. 3, 1922.

3 3 SHEETSS HEET 2.

INVENTORY V fiezzjamz'ndi'ollzm,

- WITNESS.-

A TTORNE Y.

B. J. COLLINS.

CALCULATING MACHINE. APPLICATION FILED MAYI31'1919.

. 1,402,572. I v Patented Jan. 3,1922,

898 8580 7 a SHEETS-SHEET a.

WITNESS- INVENTOR:

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ATTORNEY.

UNITED STATES PATENT OFFICE.

BENJAMIN J. COLLINS, OF SUPPLY, OKLAHOMA.

Application filed May 13,

To all whom it may concern:

Be it known that I, BENJAMIN J. COLLINS, a citizen of the United States, residing at Supply, in the county of Voodward and State of Oklahoma, have invented certain new and useful Improvements in Calculating Machines, of which the following is a specification.

My invention relates to improvements in calculating machines, and among the objects of the invention is to provide a simple, compact and accurate machine of this character which is reliable in operation and not likely to get out of order.

Important features of the invention reside in a price sheet and one or more rotary cylinders bearinq tables for use in conjunction with said price sheet in calculating thev prices for different quantities of merchanfdise.

Other objects of the invention will hereinafter appear, and in order that said in 'vention may be fully understood, reference.

will now be made to the accompanying drawings, in which: i

Fig. 1 is a perspective view ofthe machine. J

Fig. 2 is a vertical cross section on line II-II of Fig. 5. V

Fig. 3 is an elevation of one of the cylinders with a table in position thereon.

Fig. 4 is an enlarged, fragmentary cross section on line IVIV of Fig. 3.

Fig. 5 is a vertical'longitudinal section on line V-V of Fig. 2.

In carrying out the invention I employ a suitable case 1 to the interior of which access may be had through a door 3, secured at its upper end to the case 1 by a hinge 5 and provided at its lower end with a catch 7 for securing said door in closed position.

10 designates a shaft extending longitudinally through the case 1 and removably secured to the ends of the latter by suitable means, such as nuts 12. V

14, 16, 18, and 20 designate four concentric cylinders mounted upon the shaft 10 and provided with peripheral sight-openings 22, 24, 26, and 28, respectively. adapted to register with a sight-opening 30 in the upper portion of the case 1. Said sightopening 30 is closed by a plate of glass 32 or other transparent material to exclude dust and other foreign matter from passing through the sight openings into the case 1;

Specification of Letters Patent.

CALCULATING MACHINE.

' Patented Jan. 3, 1922. 1919. sci-1&1 no. 296,723.

Tables 34, 36, 3S and 40 are removably secured to theperipheries of the cylinders 14, 16. 18 and 20, respectively, and are adapted to coact with a stationary price sheet 42in making calculations. As it maybe desirable to change the tables from time to'time the tables 34 to 40 inclusive, are removably secured to their'respective cylinders by suitable means such as buttons 44 retatively mounted on the cylinders and provided at their outer ends with lips 46 (Fig. 4), which when turned in one direction pass freely through eyelets 48 in the tables and when turned in an opposite direction overlap the margins of the eyelets and reliably hold the tables in position. The. price sheet 42 is removably held in place by flanges 50 secured to the case 1 immediately beneath the sight-opening 30.

Concentric sleeves 52, 54, 56 and 58 are fixed to oneend of the cylinders 14. 16. 18

intermesh with the pinions 60, 62.64 and 66 respectively, and are removably mounted upon a stub shaft 7 6 fixed to one end of the case 1.

Thesegmental gears68, 70, 72 and 74 are independently actuated by .levers 78, 80, ,82 and 84. provided with handles 86. 88. 89 and 90;. respectively. The levers 78, 80, 82. and 84 extend through slots 92. 94, 96 and 98 in the case land are normally held in contact with the upper :ends of said slots by coil springs 100, 102. 104 and 106, respectively,

connected to the levers and the case as disclosed on Fig. 2.

When the parts are in normal position as disclosed by Fig. 2, the sight-openings in the respective cylinders register with the sight-opening 30 in the case 1. but should one of the cylinders be actuated by pulling downwardly upon its respective handle said cylinder will rotate and carry the numbers on its table past the Sight opening in the remaining cylinders and in the case 1.

108 designates an indicator consisting of a taut wire or other suitable element extending longitudinally of the sight-opening.

30 to indicate where the cylinders should be stopped when actuated through the medium of their respective handles.

The tables and the price sheet consist, preferably. of white celluloid sheets with black numerals printed thereon, so that the latter can be easily read as they appear at the sigh openings. The price sheet 42 is divided into spaces by longitudinal lines 11 r and transverse lines 116 and allor any numher of said spaces may bear numerals indicating the'different pricesat which mer-- .120 are spacedapart to register with the lines 116 on the price sheet 4 2. If the merchandise is tobe sold by the yardthe column 124; atthe left ofeach table contains numerals indicating. yards, one'quarter, one

half and three quarters of a yard, while'th two adjoining columns 126 and 128' containnumerals indicating still smaller frac-' tions than found in said'column 1241. In order that'the numerals indicating the full yardsin column 124 maybe quickly found, said numerals are displayedin' relatively large type and the lines 120 "running through said numerals are doubled as indi-' I cated at 130, .132 and'134c. I

inches oflace is, to be sold at 9e per yard,-

fon the handle offthe proper-cylinder. to ro tate the same until the. numerall in the vertical column 124 andftheadjacent nu;

the operator quickly ascertains :the cost of such piece of lace by pulling downwardly meral 3'in the vertical column 126 pass above the indicator 108, whereupon the cylinder is stopped with the line I31 registering with said indicator 108. The operator thenfollows the double line 130 to the, right with-his eye until the column containing the 7 numeral 9 is reachedwhich column registers avith the column containing thenumeral 9' on .thepricesheet 42. The correct price is then ascertained bydroppingtothe numeral 10 immediately beneath said numeral 9 and. located in the transverse column containing inches" longis-ten cents;

the numeral 3 abovementioned. Thus the cost for a piece of lace one Any number of cylinders maybe employed, and by arranging said cylinders concentrically maximum capacity in a minimum space is obtained. Shouldit be desirable-to" change the tables on the cylinders for different lines of business, said cyl inders can be readily removed from the case 1 by opening the'door 3 and removing the shaftlO; r r While I have shown the preferred embodiment of the present invention, I reserve the right to make such changes :in the construction, combination and arrangement of parts, as properly fall within the spirit. and scope of the claims;

' Having thus described my invention, what I claim and desire to secure by Letters Patent, is

In a machine of the characterdescribed, a. case having a. sight-opening therein, a table on said case adjacent the sight-opening, a shaft in said case, concentric cylinders mounted on said shaft and having sight openings for registration with the Assuming now, that one yard and three sight opening in the case, tables on said cylinders for display at the sight. openings and adapted to coact with the first-mentioned table in making calculations, an indicator extending longitudinally of the sight opening inthe case, for the purpose specified,

means for rotating said cylinders independently of eachother, sleeveslto the cylinders,

pinions fixed to said sleeves, gears intermeshing; with said pinions, levers extendmg through the case and fixed to said gears V to, actuate the same,and springs'to restore said levers to initial position.

V In testimony whereof Iaflix my signature, in the presence of two witnesses. p r BENJAMIN J. COLLINS.

Witnesses: V

yard and three 

